Replace heating element - bake

5 year old oven - I checked some biscuits this AM and the Heating element was on fire. I watched for a bit and the element was actually burning - as the hot spot moved up the element, I noticed it had cracked.

I found I can get a new one this site, but is this a simple replacement or should I hire it out? I have a friend who is a master electrician, perhaps he could help. But if it is some what simple, I’d rather do it myself. Can anyone give me direction?